Cut-out for an electric signal.



e. L. BARRETT. I CUT-OUT FOR AN ELECTRIC SIGNAL.

APPLICATION FILED SEPT- 6, I913- Patented Feb. 15,1916.

THE COLUMBIA PLANOGRAPH 50.. WASHINGTON. D- C- enoaer. L. BARRETT, ors'rnmerinnn, oriro.

CUT-OUT FOR AN ELECTRIC SIGNAL.

This invention relates to a cut-out for an I electric signal, such as: abuzzer or hell, and

the object of theinvention is to providejsuch a signal having embodiedwithin itself a cut-out whereby the circuit can be opened and closed atwill; and further, toprovide such a device which will be very simple inits construction and operation and willadd little to the cost of thesignal. 1

In the accompanying drawings,Figure 1 is a front elevation of-a buzzer.embodying my invention showing the casing removed; Fig. 2 is a rearelevation of thesame; and Fig. 3 is a vertical, sectional view takencentrally through the same with the casing in place.

In these drawings I have illustrated the invention as applied to abuzzer of a known construction but it will be understood that the devicecan be applied to signals of different kinds, although it is especiallyadapted to buzzers and bells. The buzzer here shown comprises a baseplate 1 having mounted' thereon the usual magnets 2 and vibrator 3.

Mounted on the base 1 are two connectors 4 and 5 which extend throughthe baseplate, are insulated therefrom and are connected with the coilsof the electro-magnet. The connector 4 is connected directly with the'magnet by a conductor 6 arranged on the back of the base plate, whilethe connector 5 is mounted in electrical contact with the base and isthus connected through the base plate and vibrator 3 with a contactmember 5 which cooperates with the vibrator and is connected with theelectro-magnet 2 by a second conductor, 6 on the back of the base plate.The connectors 4 and 5 are preferably connected with the signalclrcuiton the front of the base and within the casing, as indicated at7. The connector 4 is, in the present instance, in the form of a bindingpost and has the wire 8, forming one side of the circuit, connecteddirectly thereto. The connector 5 does not have the vwire connecteddirectly thereto, but has that end thereof which is within the casingprovided base.

Specification of Letters Patent. Pate t d F b 15 1916 Application filedSeptember 6,1913. Serial No. 78 ,427. I

witha contact surface arranged to be en nected. I In .the present formof the invention'I have, provided alever 9 -having mounted thereon abinding post 10 to which is connected the wire 11 formingthe othersideof the signal .circuit. The lever 9,. :ashere jgag ed by a movablecontact member to which the other; side of the circuitis oon- I shown,comprises two offset portions connected by; atransverse portion whichex-' tends through'an opening in the base plate. The lever 9' as a wholeextends across the center of the base 'plateand is pivotallyconnected totheibase plate near that edgev thereofopposite the contact'member' 5, as

1 indicated at 12. Thelever is insulated fromthe casing, preferablybymounting the metal portion'thereof on astrip ofinsulating material 13which is pivotally connectedat the The lower portion of the, lever 9which carries thebinding post '10 has a portion extendingoutward throughthe casing and forming a handle by means of which the lever may be movedfrom one position j to another. As here shown, thelever, when moved tothe left, in Fig. 1,"so that it will be brought into electrical contactwith the contact member 5, thereby closing the circuit ,in a position toopen the circuit, is arranged between the conductors 4 and 5 and can bethrough the wires 8 and 11 and the magnet.

While the wires of the signal circuit may be led into the casing in anysuitable manner I prefer to carry them in from the back through anopening 14. The wire 8 extends directly down to the terminal or bindingpost 4 but the wire 11 preferably extends upward about the magnets anddown the opposite side of the casing and thence to the binding post 10uponthe lever 9,thus form ing a loop of wire extending about the cas-fing which will permitof the movement of the lever, to which the wire isconnected, without injury to the wire, as might result from a short wireor a wire having a sharp bend therein. I also prefer to provide meansfor holding the lever firmly in engagement with the contact post ormember 5. To this end I have applied a spring to the lever and thisspring is shown as. comprising a substantially U-shaped loop of springwire 15 mounted on the rearof the base, having its upper vends securedthereto on opposite sides of the lever 9 and its transverse portionextending between the lever and the base. The U-shaped wire or spring isso connected with the basethat if unresisted it would extend at aconsiderable angle to the plane of the base. Consequently, when confinedbeneath the lever 9 it tends to move the rear portion of the lever awayfrom the base and, consequently, tends to move that portion of the leverwhich lies on the opposite side of the base toward the latter and tohold the same in firm engagement with its cooperating contact member.Means are provided for preventing the lever from coming in contact withthe casing at p a point where it extends through the same, and, to thisend, a slotted plate of insulated material 16 is secured within thecasing ad- .jacent to the opening through which the lever passes andserves to guide the lever and maintain the same out of engagement withthe metal casing.

signal.

While I have shown and described one embodiment of my invention it'willbe understood that this-has been chosen. for the purpose of illustrationonly and that I do not desire to be limited to the details of construction shown and described, for obvious modifications will occur to aperson skilled in the art.

Having ,thus fully described my invention, what I claim as newand desireto secure by Letters Patent, is

A. device of the character described comprising a base having anopening, electrical connectors mounted on said base, an electricalconductor leading to one of said connectors, the other of saidconnectors comprising a contact member, a lever pivotally mounted on theback of said base on an axis transverse to the plane thereof, extendingthrough the opening in said base to a point near said contact member andhaving a portion constituting. a handle to enable said lever to be movedinto and out of engagement with said contact member, a second conductorconnected to and movable with said lever, and a U-shaped loop ofresilient wire having its ends secured to said base on opposite sides ofsaid lever and having its transverse portion extending beneath saidlever and exerting outward pressure thereon.

In testimony whereof, I ,a'fIiX my signature in presence of twowitnesses.

GEORGE L. BARRETT.

Witnesses:

EDWARD L. REED, H. L. HAMMAKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents,

' Washington, .D. C.

